977864408 has 8 divisors (see below), whose sum is σ = 1833495780. Its totient is φ = 488932200.

The previous prime is 977864383. The next prime is 977864423. The reversal of 977864408 is 804468779.

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 977864408.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61116518 + ... + 61116533.

Almost surely, 2^977864408 is an apocalyptic number.

It is an amenable number.

977864408 is a deficient number, since it is larger than the sum of its proper divisors (855631372).

977864408 is a wasteful number, since it uses less digits than its factorization.

977864408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122233057 (or 122233053 counting only the distinct ones).

The product of its (nonzero) digits is 2709504, while the sum is 53.

The square root of 977864408 is about 31270.8235900496. The cubic root of 977864408 is about 992.5663470632.

The spelling of 977864408 in words is "nine hundred seventy-seven million, eight hundred sixty-four thousand, four hundred eight".